whats wrong with this mazda
 

looking at trading my wrangler for this but not sure whats involved in fixing the car? i was thinking about doing a rebuild on the motor but its kind of expenisve and im not looking to spend tons of money on it.
2005 Mazda RX8

thats a link to the car thats for sale if you have any input let me know thanks

Than don't buy it. An engine rebuild is not an option. a replacement is the only way to go. Around 2+ grand depending on the cars condition. Have the coils/spark plugs/wires been replaced?